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WO1996035511A1 - Reprocessing method for salvaged metallic materials - Google Patents

Reprocessing method for salvaged metallic materials Download PDF

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Publication number
WO1996035511A1
WO1996035511A1 PCT/JP1995/000892 JP9500892W WO9635511A1 WO 1996035511 A1 WO1996035511 A1 WO 1996035511A1 JP 9500892 W JP9500892 W JP 9500892W WO 9635511 A1 WO9635511 A1 WO 9635511A1
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WIPO (PCT)
Prior art keywords
dust
average particle
salvaged
metallic materials
metal material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1995/000892
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French (fr)
Japanese (ja)
Inventor
Masaru Takashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aikoh Co Ltd
Original Assignee
Aikoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aikoh Co Ltd filed Critical Aikoh Co Ltd
Priority to AU24194/95A priority Critical patent/AU2419495A/en
Priority to EP95918161A priority patent/EP0824967A4/en
Priority to PCT/JP1995/000892 priority patent/WO1996035511A1/en
Priority to KR1019970707873A priority patent/KR100227318B1/en
Publication of WO1996035511A1 publication Critical patent/WO1996035511A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/04Safety devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18Adding fluid, other than for crushing or disintegrating by fluid energy
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00Preliminary treatment of ores or scrap
    • C22B1/005Preliminary treatment of scrap
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/005Separation by a physical processing technique only, e.g. by mechanical breaking
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Definitions

  • the present invention relates to a method for regenerating a recovered metal material, and more particularly to a method for regenerating a metal material in consideration of preventing an explosion due to ignition and explosion due to shearing of the regenerating process and dust generated in a Z or pulverizing step.
  • ignition sources include frictional shock, static electricity, and spontaneous ignition. Especially in processes that use friction and impact, such as cutting and crushing, sparks are caused by processing materials or other foreign materials. It is also well-known that it is possible to emit a warning.
  • suspended solid particulates are generally called dust, and dust explosions can be applied to a wide variety of metals and non-metals, including inorganics, beans, and organic substances ranging from cereals to plastics. It is diverse.
  • the recovered metal material is an easily oxidizable metal such as an aluminum material
  • sufficient explosion-proof measures are necessary because the rapid oxidation progresses to an explosion easily.
  • the present invention sets a new spray condition of water fog as a measure for explosion protection.
  • the present invention addresses the above-mentioned situation.
  • the first aspect of the present invention relates to at least a shearing and / or pulverizing step of a regeneration treatment of the recovered metal material using either a cutter or a pulverizer.
  • a shearing and / or pulverizing step of a regeneration treatment of the recovered metal material using either a cutter or a pulverizer.
  • the term "recovered metal material” is a general term for metal materials collected for recycling, and includes metal scraps, used processed products, semi-finished products, etc., from plate-like cans to laminated foils. Until then, its form does not matter.
  • the two-fluid sprayer is a sprayer that uses water and compressed air as two fluids, and a commercial product that can obtain a water mist with an average particle diameter of 10 / zm or less is required.
  • the reason that the average particle diameter of the water fog is set to 10 cz m or less is based on the finding that it is suitable for capturing and settling dust having a diameter of 1 to 100 / m.
  • the spray amount is insufficient at less than 4 cc / h Z m when allowed to settle the floating dust, because involving excessive moisture and oxidation promoting become excessive when exceeding lOccZ h Z m 3 not It is convenient.
  • the average particle diameter of the water fog is not enough for sedimentation of the dust at the dust generation point of the cutting machine and the crusher, and the one exceeding 200 m is not preferable because it is insufficient.
  • Adjustment of the average particle size and spray amount of water fog can be carried out by using the specifications, water amount and air pressure of a commercially available two-fluid sprayer as options.
  • the easily oxidizable metal is a general term for metals having a strong affinity for oxygen, and typical examples thereof include kSL, Mg, and Ti.
  • water fog having an average particle diameter of 1 0 / zm hereinafter sprayed at a rate of 4 ⁇ 10 c cZ h Z m 3 indoor space in the structure of the present invention is to capture dust floating settling This will reduce the dust concentration and prevent the generation of static electricity and spontaneous ignition by appropriate humidification. This alone will be a measure to prevent dust explosion.
  • Water fog with an average particle diameter of 10 m or less has the property of preventing objects from wetting.
  • water fog with an average particle size of 10 to 200 m equivalent to 1 to 100% by weight of the amount of dust generated, is sprayed toward the dust generation site, preventing the diffusion of dust and igniting by friction and impact. Is also prevented.
  • water fog with an average particle diameter of 10 to 200 xm will wet the material to be treated, but in the recycling process of the recovered metal material, organic or combustible materials are immediately removed after cutting and grinding. There is no problem because it goes through the incineration process.
  • a spray capacity of 2 ⁇ Zh is applied to the ceiling of a 10m X 10m X 5m (height) factory building at a recycled aluminum processing plant equipped with a shearing force mill and a hammer lasher. Two fluid atomizers were installed, and the regeneration process was performed while spraying water mist with an average particle diameter of 8 m for a total of 4 Zh.
  • Spraying the total amount at this time is equivalent to 8 ccZ h Zm 3.
  • one two-fluid sprayer was installed in each hopper of each of the above-mentioned self-powered turrets and non-metal crushers, and water mist with an average particle diameter of 100 zm was respectively installed from this. l.
  • the regeneration process is performed while spraying the inside of the device based on OOOccZh.
  • the spray amount at this time is equivalent to about 25% by weight of the amount of dust generated.
  • C 10 weight is reused as a raw material for exothermic agents, steel feeders and heat insulators, steel deoxidizers, and steel slag modifiers.
  • the process for regenerating the recovered metal material according to the present invention
  • the generated dust is immediately captured and settled by water fog at a metal dust source such as a cutting machine or crusher during the treatment process, and the dust floating indoors is also separated. It can be trapped and settled by the water fog provided by the equipment, and can prevent ignition sources such as static electricity and spontaneous ignition by moderate humidification, so that it can be recycled without fear of dust explosion. it can.
  • water fog with an average particle size of 10 1m or less does not wet other objects, so it does not impede the metal powder, which is water-prohibited, due to excessive moisture, and easily oxidizes. It can be effectively applied to metal dust.
  • the recovered dust in the regeneration treatment of the present invention is a heating agent, a steel heater material, a steel deoxidizer, and a reform of iron slag. It can be reused in addition to the raw material of the agent.
  • the present invention is particularly useful as a regeneration treatment method for preventing the ignition and explosion of the recovered metal by the shear treatment and the dust generated in the Z or pulverization step.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The present invention provides a reprocessing method for preventing ignition and explosion by dust generated during a reprocessing such as shearing and/or crushing of salvaged metallic materials comprising easily oxidative metals. The technical configuration of the present invention resides in a reprocessing method for salvaged metallic materials characterized in that a process for shearing and/or crushing salvaged metallic materials by a cutting machine and/or a crushing machine is carried out under either or both of the following conditions: (a) spraying by at least a two fluid type sprayer provided at a high position inside a room accommodating the cutting and grinding machines water mist of an average particle size of 10 νm or less in an amount of 4-10 cc/h/m3 relative to the volume of the room; and (b) providing a two fluid type sprayer on each of the cutting and grinding machines in such a manner as to be oriented to a dust generating portion and then spraying water mist of an average particle size ranging 10-200 νm in an amount of 1-100 wt.% of the generated dust volume.

Description

明 細 書  Specification

回収 金属材 の 再生処理法  Recycling of recovered metal materials

技 術 分 野 Technical field

本発明は、 回収金属材の再生処理方法、 特に、 再生処 理の剪断および Z又は粉砕工程において発生する粉塵に よる着火爆発事故を未然に防止するこ とを考慮した再生 処理方法に関する。  The present invention relates to a method for regenerating a recovered metal material, and more particularly to a method for regenerating a metal material in consideration of preventing an explosion due to ignition and explosion due to shearing of the regenerating process and dust generated in a Z or pulverizing step.

背 景 技 術 Background technology

空気中に浮遊する径 1 〜 1 00 m ぐ らいの浮遊性固体 微粒子が適当な濃度に達したとき、 そこに火花、 火炎、 閃光などの着火源からエネルギーが与えられる と、 燃焼 から しばしば激しい爆発にいたるこ とは、 いわゆる粉塵 爆発と してよ く知られている。  When the concentration of airborne solid particles of about 1 to 100 m floating in the air reaches an appropriate concentration, it is often intense from combustion if energy is given to it by sparks, flames, flashes, etc. Explosions are well known as dust explosions.

さ らに、 着火源と しては、 摩擦衝撃、 静電気、 自然発 火などがあげられ、 特に切断や粉砕のように摩擦と衝撃 を利用する工程においては、 加工材料あるいは他の異物 によって火花を発し得るこ と も衆知のこ とである。  In addition, ignition sources include frictional shock, static electricity, and spontaneous ignition.Especially in processes that use friction and impact, such as cutting and crushing, sparks are caused by processing materials or other foreign materials. It is also well-known that it is possible to emit a warning.

こ こ に、 浮遊性固体微粒子とは一般に粉塵といわれる もので、 粉塵爆発の対象と しては、 金属、 非金属を問わ ず無機質類、 豆、 穀類からプラスチッ クにいたる有機質 類を含め、 多種多様とされている。  Here, suspended solid particulates are generally called dust, and dust explosions can be applied to a wide variety of metals and non-metals, including inorganics, beans, and organic substances ranging from cereals to plastics. It is diverse.

また、 これら粉塵による爆発を防止する対策と しては、 発塵の抑制からその飛散防止、着火源に対する処置を含め てきわめて広範囲にわたっているが、 直接的な防爆法と して注水、 散水あるいは消火剤の使用などがあげられる。 たとえば、 特公平 3 — 45320号公報はその一例である。 近年、 資源有限の見地から廃棄材の再資源化が推進さ れている。 本発明の関与する回収金属材の再生処理もそ の一環である。 Measures to prevent explosion due to these dusts are extremely wide-ranging, including control of dust generation, prevention of their scattering, and measures against ignition sources. Use of fire extinguisher. For example, Japanese Patent Publication No. 3 — 45320 is an example. In recent years, recycling of waste materials has been promoted from the viewpoint of limited resources. The recycling treatment of the recovered metal material related to the present invention is also a part thereof.

ところで、 回収金属材を再生処理する とき、 回収金属 材の形態に応じた切断、 粉砕の工程とそれぞれ経るこ と が必然的となる。  By the way, when the recovered metal material is recycled, it is inevitable to go through a cutting and pulverizing process according to the form of the recovered metal material.

これら切断、 粉砕工程は前項で述べたように摩擦 · 衝 撃を伴う ものであるから、 本来の発塵源であるこ とに加 えて着火源の要素をも有する ものである。  As described in the previous section, these cutting and pulverizing processes involve friction and impact, and therefore have an ignition source element in addition to the original dust generation source.

したがって、 回収金属材の再生処理を行う とき、 粉塵 爆発の防止対策は安全対策と して最も重要な課題となる。  Therefore, when reclaiming recovered metal materials, measures to prevent dust explosion are the most important safety measures.

特に、 回収金属材がアル ミ ニウム材のように易酸化金 属であるときは、 酸化の急速な進行から容易に爆発にい たるため、 十分な防爆対策が必要である。  In particular, when the recovered metal material is an easily oxidizable metal such as an aluminum material, sufficient explosion-proof measures are necessary because the rapid oxidation progresses to an explosion easily.

ところが、 回収金属材の切断、 粉砕のように摩擦 * 衝 擊を伴なう機構において、 極微小の水霧をもって防爆対 策と して再生処理する方法は見当らないのが現状である。  However, at present, there is no method to regenerate extremely small water mist as an explosion-proof measure in a mechanism involving friction * impulse such as cutting and crushing of recovered metal material.

これに対して、 本発明は防爆対策と して噴霧される水 霧の噴霧条件を新規に設定する ものである。  On the other hand, the present invention sets a new spray condition of water fog as a measure for explosion protection.

発明の開示 Disclosure of the invention

本発明は前述の現状に対応する ものである。  The present invention addresses the above-mentioned situation.

すなわち第 1 の発明は、 少な く と も切断機、 粉砕機の いずれかによる回収金属材の再生処理の剪断および 又 は粉砕工程において、 A 該機器を収納する屋内の高所に設けた少な く と も 1 個の二流体式噴霧器により、 平均粒子径 以 下の水霧を屋内空間容積に対して 4〜^ h /m3 噴霧する。 That is, the first aspect of the present invention relates to at least a shearing and / or pulverizing step of a regeneration treatment of the recovered metal material using either a cutter or a pulverizer. By one of the two-fluid atomizer also rather less it provided high place indoors for housing A the instrument, to 4~ ^ h / m 3 spray with respect to the average particle diameter or less of water mist indoor space volume .

B 該機器それぞれに二流体式噴霧器を粉塵発生箇所 に向けて設置し、 平均粒子径 10〜 200 mの水霧を 粉塵発生量の 1 〜 100重量%噴霧する。  B Install a two-fluid atomizer on each of the devices facing the dust generation point, and spray water mist with an average particle size of 10 to 200 m by 1 to 100% by weight of the dust generation amount.

の中のいずれか、 あるいは双方の条件下で処理するこ と を特徴とする回収金属材の再生処理方法であり、 第二の 発明は回収金属材が易酸化金属よ り成る とする ものであ 発明を実施するための最良の形態 A method for reclaiming a recovered metal material, wherein the recovered metal material is made of an easily oxidizable metal. BEST MODE FOR CARRYING OUT THE INVENTION

本発明において回収金属材とは、 再資源化のために回 収される金属材の総称であって、 金属屑、 使用済加工製 品、 半成品などであり、 板状の缶から積層箔にいたるま で、 その形態を問わない。  In the present invention, the term "recovered metal material" is a general term for metal materials collected for recycling, and includes metal scraps, used processed products, semi-finished products, etc., from plate-like cans to laminated foils. Until then, its form does not matter.

また、 本発明において、 二流体式噴霧器とは水と圧縮 空気を二流体とする噴霧器であり、 平均粒子径 10/z m以 下の水霧を得る仕様のものは市販品で求められる。  In the present invention, the two-fluid sprayer is a sprayer that uses water and compressed air as two fluids, and a commercial product that can obtain a water mist with an average particle diameter of 10 / zm or less is required.

水霧の平均粒子径を 10 cz m以下と したのは、 径 1 〜 100 / mの粉塵を捕捉、 沈降せしめるに好適である との 知見による。  The reason that the average particle diameter of the water fog is set to 10 cz m or less is based on the finding that it is suitable for capturing and settling dust having a diameter of 1 to 100 / m.

また、 噴霧量については前記浮遊粉塵を沈降せしめる とき 4 cc/ h Z m未満では不足であり、 lOccZ h Z m3を 超える ときは過剰となって過湿と酸化促進を伴うから不 都合である。 Also, the spray amount is insufficient at less than 4 cc / h Z m when allowed to settle the floating dust, because involving excessive moisture and oxidation promoting become excessive when exceeding lOccZ h Z m 3 not It is convenient.

次いで B工程においては、 切断機、 粉砕機の発塵箇所 において粉塵を沈降せしめるのに、 水霧の平均粒子径 10 m未満では不足であり、 200 mを超える ものは過大 で好ま しく ない。  Next, in process B, the average particle diameter of the water fog is not enough for sedimentation of the dust at the dust generation point of the cutting machine and the crusher, and the one exceeding 200 m is not preferable because it is insufficient.

噴霧量を粉塵発生量の 1 〜 100重量%と したもの同様 の理由による。  For the same reason as when the amount of spray is 1 to 100% by weight of the amount of dust generated.

また、 水霧の平均粒子径および噴霧量の調整は市販品 である二流体式噴霧器の仕様、 水量、 空気圧を選択肢と して実施し得る。  Adjustment of the average particle size and spray amount of water fog can be carried out by using the specifications, water amount and air pressure of a commercially available two-fluid sprayer as options.

易酸化金属は酸素との親和力の強い金属の総称であり、 代表例と して、 k SL 、 M g , T i などがあげられる。  The easily oxidizable metal is a general term for metals having a strong affinity for oxygen, and typical examples thereof include kSL, Mg, and Ti.

作 用 Action

上記したように、 本発明の構成において屋内空間に 4 〜10 c cZ h Z m3の割合で噴霧された平均粒子径 1 0 /z m以 下の水霧は、 浮遊する粉塵を捕捉して沈降させるので粉 塵濃度を減じる とともに適度の加湿によって静電気の発 生および自然発火を防止するからこれのみによっても粉 塵爆発の防止対策となる ものである。 As noted above, water fog having an average particle diameter of 1 0 / zm hereinafter sprayed at a rate of 4 ~10 c cZ h Z m 3 indoor space in the structure of the present invention is to capture dust floating settling This will reduce the dust concentration and prevent the generation of static electricity and spontaneous ignition by appropriate humidification. This alone will be a measure to prevent dust explosion.

また、 平均粒子径 10 m以下の水霧は物体を濡らさな いとする特性を有する ものである。  Water fog with an average particle diameter of 10 m or less has the property of preventing objects from wetting.

次いで発塵量の 1 〜 1 00重量%に相当する平均粒子径 10〜 200〃 mの水霧は発塵部位に向けて噴霧されるため、 粉塵の拡散を防止するほか、 摩擦、 衝擊による着火をも 防止するこ ととなる。 この場合、 平均粒子径 10〜 200 x mの水霧は被処理物 を濡らすこ ととなるが、 回収金属材の再生処理工程にお いては、 切断、 粉砕後、 直ちに有機物あるいは可燃物を 除去するために焼却工程を経るため支障はない。 Next, water fog with an average particle size of 10 to 200 m, equivalent to 1 to 100% by weight of the amount of dust generated, is sprayed toward the dust generation site, preventing the diffusion of dust and igniting by friction and impact. Is also prevented. In this case, water fog with an average particle diameter of 10 to 200 xm will wet the material to be treated, but in the recycling process of the recovered metal material, organic or combustible materials are immediately removed after cutting and grinding. There is no problem because it goes through the incineration process.

実 施 例 Example

剪断式力 ッ ター ミ ルおよびハンマーク ラ ッ シ ャ 一を備 える回収アルミニウム材の再生処理工場において 10m X 10m X 5 m (高さ) の工場建屋内天井部に噴霧能力 2 ^ Z hの二流体式噴霧器を 2個設置し、 これよ り平均粒子 径 8 mの水霧を合計 4 Z h噴霧させながら再生処理 を行う ものと した。  A spray capacity of 2 ^ Zh is applied to the ceiling of a 10m X 10m X 5m (height) factory building at a recycled aluminum processing plant equipped with a shearing force mill and a hammer lasher. Two fluid atomizers were installed, and the regeneration process was performed while spraying water mist with an average particle diameter of 8 m for a total of 4 Zh.

このとき噴霧総量は 8 ccZ h Zm3に相当する。 Spraying the total amount at this time is equivalent to 8 ccZ h Zm 3.

さ らに、 前言己力 ッター ミ ノレおよびノヽンマークラ ッ シ ャ 一の各ホッパー部に、 それぞれ二流体式噴霧器を 1 個づ つ設置し、 これより平均粒子径 100 z mの水霧をそれぞ れ l. OOOccZ hづっ、 機器内部に向けて噴霧させながら 再生処理を行う ものと した。  In addition, one two-fluid sprayer was installed in each hopper of each of the above-mentioned self-powered turrets and non-metal crushers, and water mist with an average particle diameter of 100 zm was respectively installed from this. l. The regeneration process is performed while spraying the inside of the device based on OOOccZh.

このときの噴霧量は粉塵発生量の約 25重量%に相当す The spray amount at this time is equivalent to about 25% by weight of the amount of dust generated.

Ό Ό

次いで、 こ の再生処理工程において、 水霧により捕捉、 沈降した回収アル ミ ニウム材の粉塵 ( A ^ 90重量  Next, in this regeneration treatment process, dust (A ^ 90 weight) of collected aluminum material captured and settled by water fog

C 10重量 は適宜乾燥後、 発熱剤、 鉄鋼の押湯保温 材、 鉄鋼の脱酸材、 鉄鋼スラ グの改質剤などの原料と し て再利用 している。 After being dried as appropriate, C 10 weight is reused as a raw material for exothermic agents, steel feeders and heat insulators, steel deoxidizers, and steel slag modifiers.

以上詳述したように本発明による回収金属材の再生処 理方法によれば、 処理工程中の切断機、 粉砕機などの金 属粉塵発生源において、 発生粉塵を直ちに水霧により捕 捉、 沈降して回収し、 さ らに屋内に浮遊する粉塵も別途 装備による水霧によって捕捉、 沈降し得る ものであり、 かつ適度の加湿により静電気、 自然発火など着火源とな る ものを阻止し得るから、 粉塵爆発の恐れな く再生処理 を行う こ とができる。 As described in detail above, the process for regenerating the recovered metal material according to the present invention According to the processing method, the generated dust is immediately captured and settled by water fog at a metal dust source such as a cutting machine or crusher during the treatment process, and the dust floating indoors is also separated. It can be trapped and settled by the water fog provided by the equipment, and can prevent ignition sources such as static electricity and spontaneous ignition by moderate humidification, so that it can be recycled without fear of dust explosion. it can.

さ らに、 平均粒子径 1 0〃 m以下の水霧においては他の 物体を濡らさないから、 禁水とされる金属粉に対しても 過湿による障害をおよぼすこ とはな く 、 易酸化金属材の 粉塵に対しても有効に適用 し得る ものである。  Furthermore, water fog with an average particle size of 10 1m or less does not wet other objects, so it does not impede the metal powder, which is water-prohibited, due to excessive moisture, and easily oxidizes. It can be effectively applied to metal dust.

さ らに、 回収金属材がアル ミ ニウム材の場合は、 本発 明の再生処理における回収粉塵は発熱剤、 鉄鋼の押湯保 温材、 鉄鋼の脱酸剤、 鉄鐧スラ グの改質剤の原料に加え て再利用できる。  In addition, when the recovered metal material is aluminum, the recovered dust in the regeneration treatment of the present invention is a heating agent, a steel heater material, a steel deoxidizer, and a reform of iron slag. It can be reused in addition to the raw material of the agent.

産業上の利用可能性 Industrial applicability

本発明は、 回収金属の再生処理の剪断および Z又は粉 砕工程において発生する粉塵による着火、 爆発を未然に 防止する再生処理方法と して特に有用である。  INDUSTRIAL APPLICABILITY The present invention is particularly useful as a regeneration treatment method for preventing the ignition and explosion of the recovered metal by the shear treatment and the dust generated in the Z or pulverization step.

Claims

請 求 の 範 囲 The scope of the claims 1 . 切断機及び 又は粉砕機による回収金属材の剪断 および 又は粉砕工程にあたり、  1. In the process of shearing and / or pulverizing the recovered metal material by the cutter and / or pulverizer, A 該機器を収納する屋内の高所に設けた少な く と も 1 個の二流体式噴霧器により、 平均粒子径 以 下の水霧を屋内空間容積に対して 4 〜10ccZ h /m3 噴霧する。 By one of the two-fluid atomizer also rather less provided high place indoors for housing A the instrument, three spray 4 ~10ccZ h / m relative to the average particle diameter or less of water mist indoor space volume . B 該機器それぞれに二流体式噴霧器を粉塵発生箇所 に向けて設置し、 平均粒子径 10〜 200 mの水霧を 粉塵発生量の 1 〜 100重量%噴霧する。  B Install a two-fluid atomizer on each of the devices facing the dust generation point, and spray water mist with an average particle diameter of 10 to 200 m by 1 to 100% by weight of the dust generation amount. の中のいずれか、 あるいは双方の条件下で処理するこ と を特徴とする回収金属材の再生処理方法。 A method for reclaiming a recovered metal material, wherein the method is performed under one or both of the following conditions. 2 . 回収金属材が易酸化金属よ り成るこ とを特徴とす る請求項 1 に記載の回収金属材の再生処理方法。  2. The method for reclaiming a recovered metal material according to claim 1, wherein the recovered metal material is made of an easily oxidizable metal.
PCT/JP1995/000892 1995-05-10 1995-05-10 Reprocessing method for salvaged metallic materials Ceased WO1996035511A1 (en)

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AU24194/95A AU2419495A (en) 1995-05-10 1995-05-10 Reprocessing method for salvaged metallic materials
EP95918161A EP0824967A4 (en) 1995-05-10 1995-05-10 Reprocessing method for salvaged metallic materials
PCT/JP1995/000892 WO1996035511A1 (en) 1995-05-10 1995-05-10 Reprocessing method for salvaged metallic materials
KR1019970707873A KR100227318B1 (en) 1995-05-10 1995-05-10 Processing method for salvaged metallic materials

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US6891931B1 (en) 1999-02-26 2005-05-10 Bellsouth Intellectual Property Corporation Methods and systems for enabling return to same position in a review of messages in a voice mail system using tag or identifier stored in the voice mail system
KR100504373B1 (en) * 2000-12-29 2005-07-29 주식회사 포스코 Apparatus for controlling the temperature in the mill by using the fogging sprayer

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JPS54108062A (en) * 1978-02-13 1979-08-24 Hosokawa Micron Kk Explosionnproof pulverizing method and its device
JPH0345320A (en) 1989-07-07 1991-02-26 Integram Inc Manufacture of molding material covered product
JPH0414138U (en) * 1990-05-25 1992-02-05

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JPS54108062A (en) * 1978-02-13 1979-08-24 Hosokawa Micron Kk Explosionnproof pulverizing method and its device
JPH0345320A (en) 1989-07-07 1991-02-26 Integram Inc Manufacture of molding material covered product
JPH0414138U (en) * 1990-05-25 1992-02-05

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AU2419495A (en) 1996-11-29

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